It was easy for the Muslim army of the Arabs to conquer much of persia and parts of the Byzantium empire because bothe the persian and the Byzantium army were weak due to years of fighting among themselves. The Arabs did not have to face any tough resistance from either the Persian or the Byzantium army. During the first century, the byzantium army did not like fighting open battles and they mostly were in the defensive. Although during 740 the Byzantium army came out for open fighting with the arabs, but still they were battered with heavy artilerry by the Arab army.
The confederacy was essentially cut in half. And their supply lines were destroyed (not that they had much supplies anyway)
you dont show any options so here are some examples.
-Ronald Reagan began the practice of Saturday morning radio broadcast to speak about specific politics
-President Bill Clinton and President George W. Bush held town meetings to advocate it their positions on policies they support
I'm sorry to say but your question has been falsely posted in the History section and should be placed in the proper science section. Have a good day :)